var http = require('http');
console.log("请打开浏览器，输入地址http://127.0.0.1:3000/");
http.createServer(function(req,res){
    res.writeHead(200,{"content-type":"text/html;charset=utf8"});
    res.end('欢迎光临');
    console.log("right");
}).listen(3000,'127.0.0.1');